/* ====================================
   游戏中心 - 公共样式
   ==================================== */

:root {
    --game-primary: #667eea;
    --game-primary-dark: #5a67d8;
    --game-accent: #f093fb;
    --game-bg: #f0f2f5;
    --game-card-bg: #ffffff;
    --game-text: #2d3748;
    --game-text-light: #718096;
    --game-border: #e2e8f0;
    --game-radius: 16px;
    --game-radius-sm: 10px;
    --game-shadow: 0 4px 20px rgba(0,0,0,.06);
    --game-shadow-hover: 0 8px 30px rgba(0,0,0,.12);
    --game-success: #48bb78;
    --game-danger: #f56565;
    --game-warning: #ed8936;
}

/* 游戏大厅 - 宫格卡片 */
.game-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 10px 0;
}

.game-card {
    background: var(--game-card-bg);
    border-radius: var(--game-radius);
    padding: 30px 24px;
    text-align: center;
    text-decoration: none !important;
    color: var(--game-text) !important;
    box-shadow: var(--game-shadow);
    transition: all .3s cubic-bezier(.4,0,.2,1);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    position: relative;
    overflow: hidden;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    border-radius: var(--game-radius) var(--game-radius) 0 0;
    transition: height .3s;
}

.game-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--game-shadow-hover);
}

.game-card:hover::before { height: 6px; }

.game-card .card-icon {
    font-size: 2.8rem;
    line-height: 1;
    margin-bottom: 4px;
}

.game-card .card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--game-text);
}

.game-card .card-desc {
    font-size: .88rem;
    color: var(--game-text-light);
    line-height: 1.5;
}

.game-card .card-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 10px;
    font-size: .75rem;
    font-weight: 600;
    color: #fff;
}

.card-badge-easy { background: var(--game-success); }
.card-badge-medium { background: var(--game-warning); }
.card-badge-hard { background: var(--game-danger); }

/* 卡片顶部渐变色 */
.game-card.card-2048::before       { background: linear-gradient(135deg, #f6d365, #fda085); }
.game-card.card-snake::before      { background: linear-gradient(135deg, #43e97b, #38f9d7); }
.game-card.card-tictactoe::before  { background: linear-gradient(135deg, #667eea, #764ba2); }
.game-card.card-minesweeper::before{ background: linear-gradient(135deg, #a18cd1, #fbc2eb); }
.game-card.card-flappy::before     { background: linear-gradient(135deg, #4facfe, #00f2fe); }
.game-card.card-memory::before     { background: linear-gradient(135deg, #fa709a, #fee140); }
.game-card.card-tetris::before     { background: linear-gradient(135deg, #f093fb, #f5576c); }
.game-card.card-sudoku::before     { background: linear-gradient(135deg, #5ee7df, #b490ca); }
.game-card.card-breakout::before   { background: linear-gradient(135deg, #c471f5, #fa71cd); }
.game-card.card-match3::before     { background: linear-gradient(135deg, #f6d365, #fda085); }
.game-card.card-klotski::before    { background: linear-gradient(135deg, #667eea, #764ba2); }
.game-card.card-othello::before    { background: linear-gradient(135deg, #2d3748, #718096); }
.game-card.card-jump::before       { background: linear-gradient(135deg, #43e97b, #38f9d7); }
.game-card.card-maze::before       { background: linear-gradient(135deg, #4facfe, #00f2fe); }
.game-card.card-idiom::before      { background: linear-gradient(135deg, #fa709a, #fee140); }

/* 游戏页 Hero */
.game-hero {
    border-radius: var(--game-radius);
    padding: 30px;
    color: #fff;
    margin-bottom: 20px;
    text-align: center;
}

.game-hero h2 {
    margin: 0 0 8px;
    font-size: 1.6rem;
    font-weight: 800;
}

.game-hero p {
    margin: 0;
    font-size: 1rem;
    opacity: .9;
}

/* 游戏容器 */
.game-container {
    background: var(--game-card-bg);
    border-radius: var(--game-radius);
    box-shadow: var(--game-shadow);
    padding: 20px;
    margin-bottom: 20px;
    text-align: center;
}

.game-container canvas {
    max-width: 100%;
    display: block;
    margin: 0 auto;
    border-radius: var(--game-radius-sm);
    touch-action: none;
}

/* 游戏信息栏 */
.game-info {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.game-info .info-item {
    text-align: center;
}

.game-info .info-label {
    font-size: .8rem;
    color: var(--game-text-light);
    display: block;
}

.game-info .info-value {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--game-text);
}

/* 游戏按钮 */
.game-btn {
    display: inline-block;
    padding: 12px 36px;
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all .3s;
    box-shadow: 0 4px 15px rgba(102,126,234,.3);
    background: linear-gradient(135deg, #667eea, #764ba2);
    margin: 8px 4px;
}

.game-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102,126,234,.4);
}

.game-btn:active {
    transform: translateY(0);
}

.game-btn-sm {
    padding: 8px 20px;
    font-size: .85rem;
}

.game-btn-success {
    background: linear-gradient(135deg, #43e97b, #38f9d7);
    box-shadow: 0 4px 15px rgba(67,233,123,.3);
    color: #1a4731;
}

.game-btn-danger {
    background: linear-gradient(135deg, #f56565, #fc8181);
    box-shadow: 0 4px 15px rgba(245,101,101,.3);
}

.game-btn-warning {
    background: linear-gradient(135deg, #ed8936, #f6ad55);
    box-shadow: 0 4px 15px rgba(237,137,54,.3);
}

/* 游戏结束遮罩 */
.game-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.game-overlay.show {
    display: flex;
}

.game-overlay-content {
    background: #fff;
    border-radius: var(--game-radius);
    padding: 40px;
    text-align: center;
    max-width: 90vw;
    animation: gamePopIn .4s cubic-bezier(.4,0,.2,1);
}

.game-overlay-content h3 {
    font-size: 1.6rem;
    font-weight: 800;
    margin: 0 0 8px;
    color: var(--game-text);
}

.game-overlay-content .score-display {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--game-primary);
    margin: 12px 0;
}

.game-overlay-content p {
    color: var(--game-text-light);
    margin: 0 0 20px;
}

@keyframes gamePopIn {
    from { opacity: 0; transform: scale(.8); }
    to { opacity: 1; transform: scale(1); }
}

/* 响应式 */
@media (max-width: 992px) {
    .game-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

@media (max-width: 576px) {
    .navbar { display: none !important; }
    .breadcrumb { display: none !important; }
    .container { padding-left: 10px; padding-right: 10px; }

    .game-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .game-card {
        padding: 20px 14px;
    }

    .game-card .card-icon { font-size: 2.2rem; }
    .game-card .card-title { font-size: 1rem; }
    .game-card .card-desc { font-size: .8rem; }

    .game-hero {
        padding: 20px 16px;
        border-radius: 12px;
    }

    .game-hero h2 { font-size: 1.3rem; }

    .game-container {
        padding: 12px;
        border-radius: 12px;
    }

    .game-btn {
        padding: 10px 28px;
        font-size: .9rem;
    }

    .footer { display: none; }
}